# Installing Redis on K3s with KubeVIP and MetalLB LoadBalancer
Setting up Redis in a Kubernetes environment has never been easier. This guide will walk you through the installation of Redis on K3s, coupled with KubeVIP and MetalLB LoadBalancer, ensuring a highly available and scalable setup.
## Overview of Components
– **K3s**: A lightweight Kubernetes distribution that simplifies Kubernetes management.
– **Redis**: An in-memory data structure store, perfect for caching and analytics.
– **KubeVIP**: A tool that provides a virtual IP for load balancing, enhancing control plane availability.
– **MetalLB**: A load balancer tailored for bare-metal environments, offering external access to services.
## Installation Steps
### Step 1: Install K3s
1. **Prepare Your Environment**: Ensure your server meets K3s requirements.
2. **Install K3s**:
“`bash
curl -sfL https://get.k3s.io | sh –
“`
Verify installation:
“`bash
sudo k3s kubectl get node
“`
### Step 2: Configure KubeVIP
1. **Pull the KubeVIP Container**:
“`bash
crictl pull docker.io/plndr/kube-vip:0.3.2
“`
2. **Generate KubeVIP Manifest**:
“`bash
alias kube-vip=”ctr run –rm –net-host docker.io/plndr/kube-vip:0.3.2 vip /kube-vip”
export VIP=10.0.0.200
export INTERFACE=eno1
kube-vip manifest daemonset –arp –interface $INTERFACE –address $VIP –controlplane –leaderElection –taint –inCluster | sudo tee /var/lib/rancher/k3s/server/manifests/kube-vip.yaml
“`
### Step 3: Install MetalLB Load Balancer
1. **Install MetalLB**:
“`bash
kubectl apply -f https://raw.githubusercontent.com/metallb/metallb/v0.13.7/manifests/namespace.yaml
kubectl apply -f https://raw.githubusercontent.com/metallb/metallb/v0.13.7/manifests/metallb.yaml
“`
2. **Configure MetalLB**:
“`yaml
apiVersion: metallb.io/v1beta1
kind: ConfigMap
metadata:
namespace: metallb-system
name: config
data:
config: |
address-pools:
– name: my-ip-space
protocol: layer2
addresses:
– 10.0.0.210-10.0.0.249
“`
### Step 4: Deploy Redis Using Helm
1. **Install Helm**: Ensure Helm is installed by following the installation guide.
2. **Add Bitnami Repo**:
“`bash
helm repo add bitnami https://charts.bitnami.com/bitnami
helm repo update
“`
3. **Create Redis Namespace**:
“`bash
kubectl create namespace redis
“`
4. **Deploy Redis**:
“`bash
helm install my-release bitnami/redis –namespace redis
“`
### Step 5: Verify Redis Deployment
– Check Redis pods are running:
“`bash
kubectl get pods -n redis
“`
– Connect to Redis:
“`bash
kubectl exec -it my-release-redis-master-0 -n redis — redis-cli
“`
## Benefits and Considerations
– **Scalability and Reliability**: K3s streamlines management while Redis’s inherent features ensure node recovery.
– **KubeVIP and MetalLB**: These tools enhance service availability and external accessibility.
– **Complexity**: Greater scalability comes with added complexity when compared to a standalone Redis installation.
## Resources
– **[Virtono](https://www.virtono.com/community/tutorial-how-to/how-to-deploy-redis-on-kubernetes/)**: In-depth deployment guide.
– **[Equinix](https://deploy.equinix.com/developers/guides/kubernetes-workload-cluster-with-k3s/)**: Insights into setting up K3s with added tools.
– **[Cyber-Engine](https://cyber-engine.com/blog/2023/07/21/k3s-kubernetes-with-metallb-traefik-rancher-longhorn-and-extras/)**: Integrating K3s with various add-ons.